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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

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Accession:CHEBI:27173 term browser browse the term
Definition:A brassinosteroid that is ergostan-6-one bearing three additional hydroxy substituents at positions 3alpha, 22R and 23R.
Synonyms:exact_synonym: (3alpha,5alpha,22R,23R,24S)-3,22,23-trihydroxyergostan-6-one
 related_synonym: 2-Deoxycastasterone;   Formula=C28H48O4;   InChI=1S/C28H48O4/c1-15(2)16(3)25(31)26(32)17(4)20-7-8-21-19-14-24(30)23-13-18(29)9-11-28(23,6)22(19)10-12-27(20,21)5/h15-23,25-26,29,31-32H,7-14H2,1-6H3/t16-,17-,18+,19-,20+,21?,22-,23+,25+,26+,27+,28+/m0/s1;   InChIKey=SBSXXCCMIWEPEE-SELDZKRUSA-N;   SMILES=CC(C)[C@H](C)[C@@H](O)[C@H](O)[C@@H](C)[C@H]1CC[C@H]2[C@@H]3CC(=O)[C@H]4C[C@H](O)CC[C@]4(C)[C@H]3CC[C@]12C
 xref: CAS:87734-68-7;   HMDB:HMDB0034423;   KEGG:C15793;   KNApSAcK:C00000185;   MetaCyc:CPD-719;   PMID:11161013;   PMID:24856112;   PMID:25092597;   PMID:25433632;   PMID:25700090;   Reaxys:3629989

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  CHEBI ontology 19781
    role 19726
      biological role 19726
        biochemical role 19319
          metabolite 19301
            eukaryotic metabolite 18965
              plant metabolite 17447
                typhasterol 0
                  6-deoxotyphasterol 0
Path 2
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  CHEBI ontology 19781
    subatomic particle 19779
      composite particle 19779
        hadron 19779
          baryon 19779
            nucleon 19779
              atomic nucleus 19779
                atom 19779
                  main group element atom 19669
                    p-block element atom 19669
                      carbon group element atom 19588
                        carbon atom 19578
                          organic molecular entity 19578
                            organic molecule 19510
                              organic cyclic compound 19337
                                organic polycyclic compound 16513
                                  steroid 13051
                                    hydroxy steroid 12649
                                      3-hydroxy steroid 10359
                                        sterol 428
                                          3alpha-sterol 2
                                            typhasterol 0
                                              6-deoxotyphasterol 0
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